Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
160012excellentexcellent21excellent
150013goodexcellent21excellent
140013goodexcellent21excellent
130011excellentexcellent21excellent
120022goodexcellent41excellent
110027goodexcellent41excellent
100022goodexcellent31excellent
090029goodexcellent41excellent
080024goodexcellent31excellent
070021goodexcellent31excellent
060019goodexcellent31excellent
050023goodexcellent41excellent
040022goodexcellent41excellent
030023goodexcellent41excellent
020024goodexcellent41excellent
010024goodexcellent41excellent
000026goodexcellent41excellent
230026goodexcellent41excellent
220023goodexcellent41excellent
210019goodexcellent31excellent
200018goodexcellent31excellent
190017goodexcellent21excellent
180020goodexcellent21excellent
170016goodexcellent31excellent